Circuit breaker



FIG. 1 is a front elevational view of a circuit breaker showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front elevational view of a circuit breaker showing a second embodiment of the design. The plan views and the other elevational view are the same as the first embodiment except for the appearance of the lever. 

The ornamental design for a circuit breaker, as shown and described. 